#!/usr/bin/node

const user = {
  name:'王顶',
  age:  41,
  qq:   '408542507'

};


const log = console.log;

log('name:  %s, user.name');
log('age:   %s, user.age');
log('qq:    %j, user.qq');

log('qq:  %s, user.qq');
log('qq:', user.qq);
log('qq' + user.qq);
log(`qq:  ${user.qq}`);

console.error('Error! something wrong!');
